Fix nullptr exception when using do-while

Using of 'instanceof' cannot determine whether 'nextParent' is non-null during the first loop in do-while, so when 'focused.getParent()' outside the loop returns null, the loop body will trigger a null pointer exception. Therefore, the conditional judgment needs to be covered in every loop.

Test:UAT
Bug: 336205346

Change-Id: I78374410d928009ea9b99630cae2fbea24ba8ab6
Signed-off-by: zhuning3 <zhuning3@xiaomi.corp-partner.google.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/core/java/android/view/FocusFinder.java b/core/java/android/view/FocusFinder.java
index 064bc6947fc4..5c49e24439bb 100644
--- a/core/java/android/view/FocusFinder.java
+++ b/core/java/android/view/FocusFinder.java
@@ -129,7 +129,7 @@ public class FocusFinder {
         }
         ViewGroup effective = null;
         ViewParent nextParent = focused.getParent();
-        do {
+        while (nextParent instanceof ViewGroup) {
             if (nextParent == root) {
                 return effective != null ? effective : root;
             }
@@ -143,7 +143,7 @@ public class FocusFinder {
                 effective = vg;
             }
             nextParent = nextParent.getParent();
-        } while (nextParent instanceof ViewGroup);
+        }
         return root;
     }